13021223031 has 24 divisors (see below), whose sum is σ = 18894018000. Its totient is φ = 8641406592.

The previous prime is 13021223029. The next prime is 13021223041. The reversal of 13021223031 is 13032212031.

It is not a de Polignac number, because 13021223031 - 2¹ = 13021223029 is a prime.

It is a super-3 number, since 3×13021223031³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 13021222995 and 13021223013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021223041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1937505 + ... + 1944213.

It is an arithmetic number, because the mean of its divisors is an integer number (787250750).

Almost surely, 2^13021223031 is an apocalyptic number.

13021223031 is a deficient number, since it is larger than the sum of its proper divisors (5872794969).

13021223031 is a wasteful number, since it uses less digits than its factorization.

13021223031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663 (or 7660 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13021223031 its reverse (13032212031), we get a palindrome (26053435062).

The spelling of 13021223031 in words is "thirteen billion, twenty-one million, two hundred twenty-three thousand, thirty-one".